prior to leaving the white house, president obama will meet with the leaders of northern ireland. >>> there's more to be cleaned up, more than crews first expected after a bridge demolition down in texas last night. that's called rocking the house. crowds cheering, watching the lakeside park, not knowing that that blast to tear down the lake marble bridge that was no longer used. it also destroyed a verizon fiber optic cable, killing their cell phone, internet and tv stations. it went to black in bridge debris. the good news, it will be cleaned up today. restoring the fiber optic line will take a little bit longer. >> what? >> yeah. it's called pulling the plug. >> somebody's mad, yeah. >>> san jose is getting ready to host the ncaa tournament. >>> also, pretty amazing new video of a close encounter with a pair of whales off the california coast. >>> locally, the bridges are up, still, and running. this is the san mateo bridge. i'll show you what's going on just south of the bay bridge. >>> welcome back, everybody, on a tuesday morning. that is control central here at nbc bay area. th